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Merge pull request #524 from pluskid/multiclass-ecoc
Multiclass ecoc
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23 changes: 3 additions & 20 deletions
23
examples/undocumented/python_modular/classifier_multiclass_ecoc_discriminant.py
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23 changes: 23 additions & 0 deletions
23
examples/undocumented/python_modular/classifier_multiclass_shared.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| def prepare_data(use_toy=True): | ||
| from os.path import exists | ||
| from tools.load import LoadMatrix | ||
| lm=LoadMatrix() | ||
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| if not use_toy and exists('../data/../mldata/uci-20070111-optdigits.mat'): | ||
| from scipy.io import loadmat | ||
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| mat = loadmat('../data/../mldata/uci-20070111-optdigits.mat')['int0'].astype(float) | ||
| X = mat[:-1,:] | ||
| Y = mat[-1,:] | ||
| isplit = X.shape[1]/2 | ||
| traindat = X[:,:isplit] | ||
| label_traindat = Y[:isplit] | ||
| testdat = X[:, isplit:] | ||
| label_testdat = Y[isplit:] | ||
| else: | ||
| traindat = lm.load_numbers('../data/fm_train_real.dat') | ||
| testdat = lm.load_numbers('../data/fm_test_real.dat') | ||
| label_traindat = lm.load_labels('../data/label_train_multiclass.dat') | ||
| label_testdat = None | ||
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| return [traindat, label_traindat, testdat, label_testdat] |
7 changes: 2 additions & 5 deletions
7
examples/undocumented/python_modular/classifier_multiclassliblinear_modular.py
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7 changes: 2 additions & 5 deletions
7
examples/undocumented/python_modular/classifier_multiclasslibsvm_modular.py
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7 changes: 2 additions & 5 deletions
7
examples/undocumented/python_modular/classifier_multiclasslinearmachine_modular.py
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7 changes: 2 additions & 5 deletions
7
examples/undocumented/python_modular/classifier_multiclassmachine_modular.py
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7 changes: 2 additions & 5 deletions
7
examples/undocumented/python_modular/classifier_multiclassocas_modular.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * Written (W) 2012 Chiyuan Zhang | ||
| * Copyright (C) 2012 Chiyuan Zhang | ||
| */ | ||
|
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| #ifndef ECOCAEDDECODER_H__ | ||
| #define ECOCAEDDECODER_H__ | ||
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| #include <shogun/multiclass/ecoc/ECOCSimpleDecoder.h> | ||
| #include <shogun/mathematics/Math.h> | ||
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| namespace shogun | ||
| { | ||
|
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| /** Attenuated Euclidean Distance Decoder. | ||
| * | ||
| * \f[ | ||
| * AED(q, b_i) = \sqrt{\sum_{j=1}^n (q^j-b_i^j)^2 |b_i^j|} | ||
| * \f] | ||
| */ | ||
| class CECOCAEDDecoder: public CECOCSimpleDecoder | ||
| { | ||
| public: | ||
| /** constructor */ | ||
| CECOCAEDDecoder() {} | ||
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| /** destructor */ | ||
| virtual ~CECOCAEDDecoder() {} | ||
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| /** get name */ | ||
| virtual const char* get_name() const { return "ECOCAEDDecoder"; } | ||
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| protected: | ||
| /** whether to turn the output into binary before decoding */ | ||
| virtual bool binary_decoding() | ||
| { | ||
| return false; | ||
| } | ||
|
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| /** compute distance */ | ||
| virtual float64_t compute_distance(SGVector<float64_t> outputs, const int32_t *code) | ||
| { | ||
| float64_t dist = 0; | ||
| for (int32_t i=0; i < outputs.vlen; ++i) | ||
| dist += (outputs[i]-code[i])*(outputs[i]-code[i]) * CMath::abs(code[i]); | ||
| return CMath::sqrt(dist); | ||
| } | ||
| }; | ||
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| } /* shogun */ | ||
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| #endif /* end of include guard: ECOCAEDDECODER_H__ */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /* | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * Written (W) 2012 Chiyuan Zhang | ||
| * Copyright (C) 2012 Chiyuan Zhang | ||
| */ | ||
|
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| #ifndef ECOCEDDECODER_H__ | ||
| #define ECOCEDDECODER_H__ | ||
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| #include <shogun/multiclass/ecoc/ECOCSimpleDecoder.h> | ||
| #include <shogun/mathematics/Math.h> | ||
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| namespace shogun | ||
| { | ||
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| /** Euclidean Distance Decoder. | ||
| * | ||
| * \f[ | ||
| * ED(q, b_i) = \sqrt{\sum_{j=1}^n (q^j-b_i^j)^2} | ||
| * \f] | ||
| */ | ||
| class CECOCEDDecoder: public CECOCSimpleDecoder | ||
| { | ||
| public: | ||
| /** constructor */ | ||
| CECOCEDDecoder() {} | ||
|
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| /** destructor */ | ||
| virtual ~CECOCEDDecoder() {} | ||
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| /** get name */ | ||
| virtual const char* get_name() const { return "ECOCEDDecoder"; } | ||
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| protected: | ||
| /** whether to turn the output into binary before decoding */ | ||
| virtual bool binary_decoding() | ||
| { | ||
| return false; | ||
| } | ||
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| /** compute distance */ | ||
| virtual float64_t compute_distance(SGVector<float64_t> outputs, const int32_t *code) | ||
| { | ||
| float64_t dist = 0; | ||
| for (int32_t i=0; i < outputs.vlen; ++i) | ||
| dist += (outputs[i]-code[i])*(outputs[i]-code[i]); | ||
| return CMath::sqrt(dist); | ||
| } | ||
| }; | ||
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| } /* shogun */ | ||
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| #endif /* end of include guard: ECOCEDDECODER_H__ */ | ||
|
|
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